In 1927 the Indian Prince remained largely the same technical spec as the 1926. To identify this bike. Engine numbers start BL001. OHV numbers have an R after the standard letter model year.
OHV numbers for a 1927 would be: BLR-001

They did however change the mudguards and a few other minor parts. New wider drop side fenders
with raised center, automatic oiler was the same. New style exhaust and minor generator changes
and location for appearance, A new brake on the Prince with optional foot brake control, new intake valve material, longer rear axle nuts, larger cam bearing and cam shaft, larger foot brake lever, 25 x 3.30 smaller tires on front rim: 25″ diameter 36 spokes, rear 24″ X 3″ CC rims ( painted Black ).
54″ wheel base, foot boards folding type with rubber mats, foot rests optional.
Wico 6 volt 12 ampere hour battery.

The Indian Prince used the same Splitdorf Magneto model GH-1 as the 1925 model.
Oil capacity: 3 quarts.
Motor: Bore: 2″3/4,Stroke 3 37-64″,
Piston displacement: 21.25 cu.in.
Valve: Diameter 1″5/8″. Lift 9-32″
Piston: Cast Iron, 2 x 1/8″rings.
Piston Pin: 5/8″.
Connecting Rod: lower end roller bearings.
Horse Power, 2 1/2 H.P.
Wheels: 26″ clincher.
Rims: (black finish).
Gear Ratios
The standard sprocket equipment Motor-15 tooth, Clutch-38 tooth, Countershaft-18 tooth
Rear Wheel-43 tooth
Gear ratio of 6.05 to 1 in high; 10.89 to 1 in intermediate; 19.61 to 1 in low.